Geared locomotive



l May 22, 1928.

O. C. HOPKINS GEARED LOCOMOTIVE (n venlor A (lor ne y -40 in fthe pnrts are .combined Patented May 22, 1928.

UNITED' sur-Ee PATENT offri-ce..

' osnn c. Hommes, on mvnmnn, Inmo.

amm LocolroTIvn ppnamn ma :mmm 15, .1927. .semi no. 163,325.

My present kinvention relates to improvements in geared locomotives,l of the Shay type that are especially. designed 01' .tractive foi-ce and power at slow speed, and appl-icable for use on steep oracles and sha1-4p turns or curves `with smo' radius on railways. In carrying ont the principles of my inventionthe locomotive is eqiupped with n-pnir of lfour Awheel.t1-noirs, zuid the wheels, in 1u pairs. z ltthe sigles of theA trucks are coupled together by the usnal connecting rod. A plurality o"f engines, ofthe vertical type are employed 4to o crate n crank shaft, and power is triinsimtted ton longitudinally dise posed, 'centrally nrrangcdfexible jack shaft and bj1-means .of the jack shaft power is transmitted to a driving axle of each of the front end rear trucks of the locomotive.

As is Well known this type of locomot-iife is eo subjected to excessive .weer `of its operating parte, .which require frequent replacements due to lfriction on account of the steep grades :mil sho-np cur-.ves on the railroiideniplo .ing such locomotives. :Bythe utilization 4or the novel .combinations and arrangements of gai-ts involved in .the locomotive asimpnoved yr-me. the drive mechanism, .transmission mechanism .xandgearing as well as the tconstrnction'oftlxe trucks, are adapted to render so therequired tiexibility -i'or a smooth running locomotive in `wlfn'cliuthe friction to n lnaxb .mum degree is eliminated.

The invention ,consists` in certain ,novel combinations and arrangements of parts as acwill hereinafter lie-more `iiully pointed out and claimed.

In .tl1e..eccompanying ldrawings I have illustrated .one complete .exemple 4of .the .physical emhodimentof my invention whereand arranged aco cond' to the Abest; mode Ilieve thus far de- Nseclm'or :the practical .application of the .principles of my invention.

Y Figure l is a view in side elevation of :i

.geared locomotive involving l,the features .of

Lmv invention.

iguref?, is a. plan view showing one of Athe trucks (the rear one) and n. )option 4of ,the ,drivingicnd transmission mccmnisin for 5o imparting poniente the .wheels of the truck,

it berno' :understoodthntthe A,front tinck is Sn `plieli with power in like manner.

igure 3 is en end view of the reartruclc as at line 3-3 of Figure l.

.norts boing ileotrotod @mok is Figure :i is on enlarged detail .ectionol view showing the lubrication ineens for .the Joiuniil bezliiings of the truely` Wheels.

.F 1euro 5 lo o tronovorso Soo-tion!!! fio-W of .onoof .the ,universel i-oinfo of ftlho '.qliveii, soot-10ml, tronsln-ioion Shaft elli) img Powier from the crank shaft :to the aides of the .front and ,rooltnuokS-- .Figure .6 is. .o longitudine! detail oootiolml view of ono of tho universel onto -ifho fIoXiPIo .tronomisoion ohef1=- Fagor@ .7 iso detail poropooiiio new Shoning one of the odiusoloebool-ng blooko of bho ooi-vond joints.

In order that time general nssernblynnl rellation( of parte moy rendily bev nnlerstood vI have Shown 1.1.1 Figure l ,o .looomtvo oqulppeid ooooizdeg to my invention and provided with the -nsnnlstegmi boiler l, cab 2 und fuel und water compartment 3, these in oonvontioeol Syio sind s xipported Afrom vthe steel ginder or .nnderfrnme -iof t ielocpmotive The locomotive `1S Slipnoxtod on e pcirfcf fons-wheel trucks as 5 und 6 which oro of Sebetnnnally similar ,constrnction and nginpted Afor ineens the di'ivingpoiver ofthe locomotive. l

Provided vwith tivo poire of Wheels .7 and .8 ond Y9 ,and 19. and tho paire of -ivlieolo of .the front triick are con led together by connecting todo -11. :whileltiie `wheels of the )ons on ilo roer-ti'uok oro ooilplofl -tosotlier 12. The wheels 8 et tge y @consisting -rodo opposite sides .of the imei @ook sind a wheels :9 et tho opposite oidos of #1.19 ivoor truck nreluused as the drivers of the recopectivo trucks, ond of Course the -oonnoofog nods .transmit power to the other whoiofbf 4the -t-,rnclsin order tligt the ma-xininin tlractlvo .force my ioo om loyodliio'r onok wheels nre counterbelnnced .as nsunl, Asind Hengel, eofl-tlioofuok immo-S oro Promod with n. flexibility that compensates for ,the oneing of 2111 of the troc-.tion whoole Each truck is provided .with a king or piyot pin-,13 that c ofects with-suitable parts on the nnderfromo A4 .of the .loooreooi-xo `ond the piyot-,ping are carriednt the lon-itnclinal Lo. teensbolsters 14 of the trucks. Tho/eo boleters le ene-.rosilently slmnol'iod b Springs 1.o .ond ohobottom boleto' 16, the n. otter .orrongod P oiollol with and below the reoiliont bolster 1A, and the latter is giiided in its center line `oi" the locomotive on .t

Eooh

face four L-shaped sockets 66, and these socketsare closed by means lof a retaining ring 67 secured to. the head by bolts 68.

The end of the section 35 is forked as at 69 and the adjoining end of the shaft section 63 is forked as at. 70 and these forks are provided with bearing pins or journals 7l that are radiallyv disposed with relation to the axes ot' the shaft sections. These pins are journaled in bearing blocks 72 located in the L-shaped sockets and each block is fashioned with a cam face T3 with which a u-edge or cam block 74 co-acts when the set bolt 75 is turned to adjust the relation of the bearing block and cani block for adjusting the operating parts of the universal joint, and to take up the wear on the journals and pins.

.what I c aim as new and When t-he wear beeoines excessive the adjacent sides of the split journals may be milled or planed o" to re-establish a tight bearing.

Havinfr thus full-y described my invention, desire to secure by Letters Patent is- In a geared locomotive the combination with spaced driving trucks and intermediate transmission shaft arranged to fiex along the longitudinal axis of the locomotive, said trucks comprising* side frames and end bolsters, double shackles joining the ends of the end holsters and side frames, gear housings on the trucks and connections between said housings and said end holsters.

In testimony whereof I ax my signature.

OSCAR C. HOPKINS. 

